Typewriter attachment



y 20, 4 J. O: SHERMAN. 2,242,268

TYPEWRITER'ATTACHMENT Filed Jan, 9, 1 959 v a Sheets-Sheet 1 INVENTOR (/W/A/Q6f/ERMAN May 20, 1941- 'J. Q. SHERMAN TYPEWRITER ATTACHMENT Filed Jan. 9, 1939 3 Sheets-Sheet 2 INVENTOR Joy/v Q 6/IEAM/I/V y 0, J. O. SHE AN 2,242,268

TYPEWRITER ATTACHMENT Filed Jan. 9, 1929 2 F 2 s Sheets-Sheet 3 Patented May 20,

mnwlumn ATTAC John a. some, Dayton, Ohio; Katherine M.

. Sherman, William C. Sherman and Wellmore B. Turner exeeutors of said John Q. Sherman,

. deceased Application January 9, 1939; Serial No. 249,955

11 Claims. 01. 197-130) This invention pertains to typewrl-ting machines and the like, and more particularly to a tageous structural features and possessing the described inherent meritorious characteristics.

sheet feeding apparatus for automatically advancing successive "individual sheets or sets of sheets of record material into writing position in unison with the rotation of the platen roll ofa writing machine, whereby as the inscription of 7 one sheet is completed the next sheet is automatically presented for continuance of the writing .operation.

In the present invention there is contemplated an attachment for conventional typewriters, to be mounted upon and movable to and fro with the platen carriage thereof it the carriage is movable, including a paper supply holder from which sheets are ejected into position for engagement by a traveling carrier by which they are presented contiguous to'the platen roll for further advancement past the writing position by either the conventional pressure frictional With the above primary and other incidental objects in view as will more fully appear in the specification, the invention intended to be pro-- tected'by Letters Patent consists of the features 'of construction, the parts and combinations thereof, and the mode of operation, or their equivalents, as hereinafter described or illustrated in the accompanying drawings.

In the drawings, wherein are shown the preferred but obviously not necessarily the only embodiments of the invention, Fig, 1 is a perspective view of a sheet feeding apparatus embodying the present invention.

Figs. 2 and 3 are side elevations thereof showing the parts in slightly different stages of operation.

rolls, or by a pin type feeding unit associated with the platen roll, or by continued advancement of the traveling carrier.

' The object of the invention is to provide a' sheet feeding attachment for typewriters and the like which will ,be of simple construction and which may not only be economically manufac tured; but will be eiiicient in use, automatic in operation, uniform in action, having relatively few operating parts, and unlikely to get out'of.

repair.

A further object of the invention is'to posi-. tively feed separate, independent record sheets or sets of sheets from a supply packet and present them one unit at a time with prescribed areas thereof in exact registering and aligned relation with a writing or imprinting position.

A further object of the invention is-to provide" automatic. control for the advancement of the sheets by which their advancement will he effected in timed sequence.

A further object of the invention is to provide frictional pick-up means for ejecting the sheets or set units singly from a supply thereof inassociation with pin type means for positively advancing the ejected sheet into record receiving position. v

A further object of the invention is .to provide means for automatically rendering the conventional typewriter feed means eflective and ineffective in timed relation with the advancement of successive record sheets.

, A further object'of the invention is to provide a sheet feeding attachment for typewriters and the like embodying the herein mentioned advane Fig. 4 is a detail view of the yieldingly mounted sheet engaging pin.

Fig. 5 is a detail view of plate.

Figs. 6 and '7 are side views similar to Figs. 2 and 3, illustrating a modification of the'sheet advancing means. I

Like parts are indicated by similar characters of reference throughout the several views.

' The present sheet feeding apparatus comprises a. unitary. structure to be mounted upon the platen carriage 2 of a conventional typewriter I or other imprinting apparatus, of which a fragmentary portion is shown in Fig.1; It ig'disposed in upwardly and rearwardly extending relationabove and back of the platen, roll. This unit includes a box-like holder. 4 for a supply packet of separate record sheets or sets loosely positioned therein. The holder 4 is supported upon the platen carriage 2 by rearwardly extending arms 5. Connected also at opposite sides of the sheet holder l-are frame trusses 6 and upwardly extending supporting struts 1. The supply of sheets within the holder 4 rests upon a movab le follower plate 8 therein, provided with ears 9 which project through slots l0 adjacent to the corners of the holder. Cables ll connected to the protruding follower plate ears 8 pass over guide pulleys I2 on the frame members 6. The

'- cables are connected to weights i3 positioned within wells or vertical guide tubesil also mounted on the platen carriage of the writing machine. The weights-tend to retract the follower plate 8 to move the sheet supply withinthe holder 4 as successive sheets are removed therefrom to present the topmost sheet and next a portion of the detent to be ejected, always in the same plane for operative engagement of the ejector.

Secured to opposite ends of the platen roll 2 are a pair of sprocket wheels II. A corresponding pair of sprocket wheels I are mounted on a transverse shaft I! supported in the upper ends of the frame struts 1. Endless chainbelts it are mounted upon the respective sprocket wheels II and I for circuitous travel in .unison with rotation of the platen roll. The traveling chains l8 carry at spaced intervals friction pads or projecting bosses 19 of rubber or other tenacious material. During the downward travel of such tenacious pads l9 past the sheet holder 4 they have frictional contact engagement with the top-' most sheet of the supply and by such frictional engagement serve to carry the topmost sheet from the holder a limited distance in a downwardly direction toward the platen roll 3.

However, the movement of the sheet under the frictional influence of the pads I9 is limited by engagement of its forward edge with a yieldingly mounted detent plate 20. The detent plate 20 is supported upon brackets 2| secured to the lower wall of the sheet holder and extends transversely of the unit intermediate the traveling chains l8. The lower margin of the plate is forwardly bent to form a lip 22 for lodgment of the elected record sheet. The plate has therein a pair of vertical spaced slots 23.

Transversely connecting the traveling chains 58 at spaced intervals are bars 24 traveling with the chains and carrying spaced studs 25 projecting perpendicular to such transverse bars 24. The studs 25 are preferably, although not necessarily, yieldingly mounted on spring fingers 26 attached to the under sides of the bars 24, against the tension of which the studs 25 are depressible.

These studs are so positioned with relation to each other and to the path of travel of the ejected record sheet as to register with and engage in holes 21' in the record sheets. These may be file holes medially disposed adjacent to the top margin of the sheet or may be holes otherwise disposed in the sheet for feeding purpose only.

Slightly in advance of the travel position of the sheet engaging feeding pins or studs 25 are cam lugs or projections 28 carried also by the trans.-

verse bars 24, which engage with the upturned marginal lip of the detent plate 29 to displace the detent lip out of the path of travel of the sheet. The continued travel of the chains under influence of the line space mechanism and resulting rotation of the platen roll 9 carries the engaged sheet about the platen roll and past the writing position. After passing beyond the platen roll the inscribed sheet may be manually disengaged from the then upwardly traveling pins 25.

The construction and relatively spacing of the friction pads and the feeding pins 25 is such that the pads engage and advance the sheets somewhat in advance of the feeding pins, 1. e., before the pins reach the feed holes 21, until the sheet is arrested by the detent plate 20 to allow the pins to catch up with the sheet. During the period of rest of the sheet in engagement with the detent plate, the friction pads l9 advance idly over the sheet. Such differential between the advancement of the sheet by the friction pad and its subsequent engagement bythe feeding pins compensates for any slippage, inequality or defective timing of the frictional feeding action. Having been picked off the supply pack and advanced relative thereto by the friction pads ii, the advanced sheeet engaging the detent plate awaits the advancing pins 25. The pins 2lengage and ride over the advanced sheet in retracted or depressed relation until they encounter the holes 21, into which they are projected by their spring leaves 26. At the same moment the cam lugs 28 press the detent plate out of the path of the sheet. thereby permitting it to advance in unison with the pins 24 and the chain I 8 at a uniform rate of speed into aligned and registering relation of successive writing lines with the writing or imprinting position. Such positive advancement by the feeding pins insures that succeeding writing lines are accurately registered at such imprinting point.

During such positive advancement of the record sheets about the platen roll and past the writing position by the traveling pins 25, the conventional pressure frictional feeding rolls 29 are preferably maintained in disengaged relation with the platen roll. Such is the construction illustrated in Figs. 2 and 3. However, subsequent to its ejection from the holder, the record sheet may be advanced about the platen roll and past the writing position by the conventional frictional feeding rollers 29 alone, or in lieu thereof by feeding pins 29a carried by the platen roll and progressively engageable in marginal holes in the record sheets, or by operation of these feeding devices in sequence; as is illustrated in Figs. 6 and 7.

In such construction, the arrangement of the sheet holder 4 and traveling chains i8 carrying friction lugs engageable with the topmost sheet or set within the holder to advance it in unison with the travel of the chains is the same as before. The friction lugs I9 "pick oil" the top- -most sheet or set from the supply stack in the.

of the friction rollers, the forward or top edge ofa succeeding sheet is entering between the friction roller 29 and the platen.

If, however, a pin type platen having radial feeding pins 29a is employed, the friction rollers 29 are automatically disengaged when the record sheet has been advanced thereby sufficiently far 'for engagement of the feeding pins 29a in correspondingly spaced feed holes in the sheet. The engagement of the pins 290: insures accurate registry and alignment of the sheet at the writing position and its positive advancement rela tive thereto.

For the purpose of disengaging and reengaga ing the friction pressure rollers 29 at timed intervals in the cycle of operation, rotary cams 3| are provided at opposite ends of the platen roll and pivotally mounted concentrically therewith for independent rotation. ,These cams in one position of rotary motion engage the friction roller mounting to movethe rollers 29 away from coacting relation with the platen roll, as shown if; Egg. 6, into inoperative position as shown in To actuate the cams through successive partial rotations, studs 32 are provided at spaced interless tr ve ng belt disposed in upwar ly n vals on the traveling chains l3. Projecting from the rotary cams 3| into the path of travel of the studs 32 are other studs 33. As shown in Fig.

6, as the sheet is advanced by the action of the friction rollers 29 to the point where its further advancement is to be eflected positively by the feeding pins 29a, a stud 32 on the chain 18 contacts a stud 33 projecting from the cam 3|.

By continued travel motion the stud 32 causesv a partial rotation of the cam 3| until the actu'. ating stud 32 passes beyond the orbit of the cam stud 33, which leaves the cam at rest in its advanced position as shown in Fig. I. The friction rollers are thus held inoperative while the pins 23a of the pin type platen further advances the record sheet. As the trailing edge of the record sheet approaches writing position, a succeeding stud 32 on the traveling chain l8 engages a secondstud 33 on the rotary cam'3l as is shown in Fig. '7. Upon further travel motion,

rearwardly inclined relation relative to the platen roll and in parallel relation with the topmost; sheet of the stack, relatively spaced tena-" cious lugsvon the belt having frictional contact engagement with the topmost sheet of the supply as the belt advances; and operative to elect the engaged *sheet therefrom, a detent engaged by the advanced sheet to temporarily arrest the advancement thereof while the belt continues to advance relative thereto, relatively spaced feeds ing pins carried by the belt, one of which is adthe cam is rotated through a partial turn until vanced into engagement in 'a hole in the sheet I by the relative movement of the belt, and release means operative by the travel of the belt for disengaging the detent and sheet, thereby permitting further advance movement of the sheet by the engaging pin.

2. In a writing machine wherein separaterecord sheets each having therein a configuration for engagement of a feeding device are successively advanced from a supply thereof and thence about a platen roll and past a writing position, including a holder for a supply of sheets, frictional means for ejecting the sheets one by one from the supply thereof into a-posi-' tion wherein the feeding configuration of the supply packet within'the holder I and presented in timed sequence in feeding relation with the platen roll for travel movement past the writing position under influence of either conventional, pressure rollers or by pin type feeding means carried either by traveling chains or by tion lugs l9 and studs 25 of Figs. 2 and 3, a similar variation of form lengths may be accommodated.

- From the above description it will be apparent that there is thus provided a device of the character described possessing the particular features of advantage before enumerated as desirable, but which obviously is susceptible of modihcation in its form, proportions, detail construction and arrangement of parts without departtion.

sheet is aligned for engagement of the feeding device therewith, a detent temporarily :holding the ejected sheets in advanced for automatically releasing the detent to permit timed advancement of the successive sheets, and feeding means having positive engagement with the feeding configurations of successive sheets for advancing the sheets in progressive sequence relative to the platen roll and the writing posi- 3. In a writing machine wherein separate record sheets having therein holes for engage-'- ment of a pin type feeding, device are successively advanced from a sirpply thereof and thence'about a platen roll and past a writing position, traveling frictional ejector means hav-- 7 ing frictional contact engagement with the topmost sheet of the supply for advancing the en-.

gaged sheet therefrom into position for engagement by the. pin type feeding device, a detent ing from the principle involved or sacrificing any of its advantages. a

'r'f'iui in order to comply with-the statute the tion is therefore claimed in any of its forms or with which the advanced sheet is engageable for temporarily arresting the advancement of the sheet, means for automatically releasing .the de-; tent to permit timed advancement of the 'successive sheets, and traveling pin type feeding means engageable in the holes of the advanced 1 sheets for further advancing such sheets in progressive sequence relative to the platen roll and writing position.

4. In a writing machine dependent record sheets are sumessiveiy advanced from a supply packet and progressively fed about a rotary platen roll and past a writing position, a container for a supply packetv of 7 withthe follower. plate for raising the packet as succeeding sheets are removed therefrom, a pair of traveling endless belts passing inproximltymodiflcations within the legitimate-and valid scope of the appended claims.

Having thus described my invention, I claim:'

1. In anm jg machine wherein separate record sheets are"successively,advanced one by for a stack of individual record slieets,..an end;-

to the sheet supply container, tenacious friction;

lugs carried thereby having frictional contact arresting the ejected sheet-in advanced position; feed pins carried by the belt .engageable in holesn the sheets, means actuated by the advancementofthe belts in releasing the detainedsheet sition, means wherein separate infrom the detent for advancement by the belt carried feeding pins, the construction and arrangement being such that successive sheets are ejected from the container and presented in continuous succession at the writing position.

5. In a writing machine wherein separate independent record sheets are successively advanced from a supply packet and progressively fed about a rotary platen roll and past a writing position, a box-like container for a supply of sheets, a traveling friction member engageable with the topmost sheet for ejecting the sheet from the supply thereof into position for positive advancement about the platen roll, and a positive feeding means having interengaging feeding relation with the sheet subsequent to its ejectment from the supply and operative to positively advance the ejected sheet relative to the platen roll and present a prescribed portion thereof in registry and aligned relation at the writing position.

6. In a writing machine wherein separate individual record sheets are successively advanced about a platen roll and past a writing position, a container for a supply of record sheets, means for presenting successive sheets of the supply in a given plane, ejector means for ejecting the topmost sheet of the supply, a detent for arresting the ejected sheet in a predetermined position, means for releasing the detent, traveling pin type feeding means engageable with the ejected sheet while in arrested position, and means for actuating the pin type feeding means for advancing the engaged sheet relative to the platen roll and writing position.

, thereof into position for subsequent engagement by a sheet feeding means, a traveling pin type feeding device automatically engageable with the ejected sheet for advancing the sheet relative to the platen roll and writing position, and

means for synchronizing the engagement of the sheet by the pin type feeding means with the operation of the platen roll.

11. A writing machine wherein separat record sheets are successively advanced from a supply thereof and thence about a platen roll and past a writing position, including an ejector for advancing the sheets or sets of sheets one by one from the supply thereof. frictional pressure rollers for advancing the ejected sheet relative to the platen roll and movable into and out of cooperative relation therewith, and a trip device responsive to the movement of the ejector for intermittently engaging the frictional pressure rolls in cooperative relation with the platen roll.

12. In a writing machine of the type wherein independent record receiving units are successively advanced from a supply thereof into impression receiving relation with imprinting mechanism, a friction and a pin type feeding means operating in synchronism with the imprinting mechanism and successively engageable with the 7. In a writing machine wherein separate individual record sheets having therein feed holes are successively advanced about a platen roll and past a. writing position, ejector means for ejecting the sheets one at a'time from a supply stack, sheet arresting means by which the advancement of the sheet is temporarily arrested, traveling pin type feeding means automatically engageable in ahole in the arrested sheet and operative to advance the sheet about the platen roll and past writing position, and means for releasing the sheet arresting means in timed relation with the pin type feeding means.

8. A writing machine wherein separate record sheets are successively advanced from a supply thereof and thence about a platen roll and past a writing position, including ejecting means for advancing the sheets one by one from the supply thereof, and dual feeding means including frictional pressure rollers and a pin type feeding means having successive engagement with the sheet during each feeding cycle for advancing the sheet about the platen roll, and automatically operated means for sequentially engaging the frictional and pin type feeding means with an advanced sheet.

9. A writing machine wherein separate record sheets are successively advanced'from a supply thereof and thence about a platen roll and past a writing position, including traveling frictional ejecting means for removing and advancing the sheets one by one from the supply thereof, frictional pressure rollers to which the sheet is advanced by the ejecting means cooperative with the platen roll for advancing the ejected sheet, and pin type feeding means having positive engagement with the sheet to which the sheet is delivered by the frictional pressure rollers for continuing the advancement of the sheet past a writing position.

units, and a device into relation with'which the units are advanced from the supply thereof by the friction feeding device and from relation with which the units are advanced by the pin type feeding means in timed relation with the operation of the imprinting mechanism.

13. In a writing or imprinting machine of the type wherein record receiving units are progressively advanced from a supply thereof into impression receiving relation with imprinting mechanism, a unit ejector advancing the units singly from the supply thereof, a positiv feeding device for advancing the units into impression receiving position into the range of operation of-which the units are advanced by theejector, a detent temporarily arresting the advancement of the units, and detent release means operative in synchronism with the positive feeding device to permit advancement of the unit by the positive feeding device in timed relation with operation of the imprinting mechanism.

14. In a writing or imprinting machine of the type wherein record receiving units are progesslvely advanced from a supply thereof into impression receiving relation with imprinting mechanism, dual feeding devices operative sequentially to advance the units, one of which is operative to eject the units from a supply thereof and successively deliver such units to the other, and a device operative intermediate the engagement of the respective feeding devices with each unit for synchronizing the advance movement of the unit with the operation of the imprinting mechanism.

15. In a writing machin of the type wherein independent record receiving units are successively advanced from a supply thereof into impression receiving relation with imprinting mechanism, dual feeding means successively engageable with the units, including a combined ejecthe pin type-feeding device to produce feeding engagement of the pins in the feed holes of the anism, a holder for a stackof record sheet units,

friction means for removing successive individual sheet units from the stack, a pin typ feeding device for advancing the sheet units past imprinting position in synchronism with operation of .the imprinting mechanism,- and means for synchronizing movement of the sheet units by the friction device with advance movement of sheet units. v

17. In a writing machine wherein a succession of separate record units are removed one by one from a supply packet and advanced past writing position of an imprinting mechanism, dual feeding means for removing successive record units from the supply packet and advancing the units past the writing position, both of whichfeeding means operate in synchronism with the "imprinting operation, and means for shifting the units from the feeding influence of one .feeding device to feeding influence of the other feeding device during travel movement of the units from the supply packet to th writing position.

JOHN Q. SHERMAN. 

